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Indexed by:期刊论文

Date of Publication:2014-09-15

Journal:MATERIALS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:131

Page Number:206-209

ISSN No.:0167-577X

Key Words:Brucite; Basic magnesium carbonate; Magnesium carbonate; Microstructured materials; Flue gas absorption technology

Abstract:Basic magnesium carbonate/magnesium carbonate microstructured materials have been synthesized as by-products in a simulative flue gas absorption technology through a direct carbonation of Mg-based (brucite) slurry. A probable carbonation mechanism from brucite to magnesite is proposed via a couple of gas-solid reaction pathways. Experimental results demonstrate that the reactions undergo transitional basic magnesium carbonate carnations constructed by microflakes and then development of rhombohedral magnesium carbonate microstructured crystals with further incorporation of carbon dioxide. Furthermore, the carbonation parameters of brucite are also studied in detail. Since the novel approach is simple and has a high additional value in combination with the flue gas absorption technology, the process could bring significant progress for residue treatment in chemical CO2 capture. (C) 2014 Elsevier B.V. All rights reserved.